Send previous request latency via X-Incognia-Latency

[alangalvino]

Summary

• track the latency of the last successful API request in the shared client
• send that value in the X-Incognia-Latency header on subsequent requests without changing request bodies
• add specs covering first-call omission, cross-request propagation, and overriding a caller-provided latency header

[Copilot]

Pull request overview

Adds client-side tracking of the previous successful request latency and forwards it on subsequent requests via the X-Incognia-Latency header, with accompanying specs to validate omission on first call and propagation/override behavior.

Changes:

• Introduce X-Incognia-Latency header injection based on the prior successful request’s measured latency.
• Add thread-safe storage of the last request latency in the singleton client.
• Add RSpec coverage for first-call omission, cross-endpoint propagation, and overriding caller-provided latency.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
lib/incognia_api/client.rb	Track/store last request latency and inject it into subsequent request headers.
spec/client_spec.rb	Add specs validating latency header behavior across calls/endpoints and override semantics.

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[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

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[ottony]

Wdyt?

Suggested change

	if (latency = last_latency_ms)
	request_headers[LATENCY_HEADER] = latency.to_s
	end
	request_headers[LATENCY_HEADER] = last_latency_ms&.to_s

And when sending the request, use a compact

response = connection.send(method, endpoint, json_data, request_headers.compact)